Features : CRW12MSFA, contain tools with a multi-drive, 12-point design that can be used on 6-point, 12-point, square, Torx, spline and rounded fasteners. The CRW8SFA is an 8-pc SAE set with 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″ and 3/4″ wrenches.